Casing of a hand held ultrasonic flaw detector instrument



FIG. 1 is an isometric view of a casing of a hand held ultrasonic flaw detector instrument;

FIG. 2 is front view thereof;

FIG. 3 is back view thereof;

FIG. 4 is left side view thereof;

FIG. 5 is right side view thereof;

FIG. 6 is top view thereof; and,

FIG. 7 is bottom view thereof.

The broken lines illustrate portions of the casing of a hand held ultrasonic flaw detector instrument that form no part of the claimed design. 

CLAIM The ornamental design for a casing of a hand held ultrasonic flaw detector instrument, as shown and described. 